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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">grekov</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник хирургии имени И.И. Грекова</journal-title><trans-title-group xml:lang="en"><trans-title>Grekov's Bulletin of Surgery</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0042-4625</issn><issn pub-type="epub">2686-7370</issn><publisher><publisher-name>Federal State Budgetary Educational Institution of Higher Education «Academician I.P. Pavlov First St. Petersburg State Medical University» of the Ministry of Healthcare of the Russion Federation, FSBEI HE I.P.Pavlov SPbSMU MOH Russia</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24884/0042-4625-2025-184-3-25-32</article-id><article-id custom-type="elpub" pub-id-type="custom">grekov-2595</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ВОПРОСЫ ОБЩЕЙ И ЧАСТНОЙ ХИРУРГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PROBLEMS OF GENERAL AND SPECIAL SURGERY</subject></subj-group></article-categories><title-group><article-title>Конкурентный кровоток как предиктор несостоятельности маммарокоронарного шунтирования: роль моментального резерва кровотока</article-title><trans-title-group xml:lang="en"><trans-title>Competitive blood flow as a predictor of mammarocoronary artery bypass graft failure: the role of instantaneous wave-free ratio</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6128-7138</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шенгелия</surname><given-names>Л. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Shengelia</surname><given-names>L. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шенгелия Лаша Давидович, кандидат медицинских наук, сердечно-сосудистый хирург, научный сотрудни </p><p>121552, Москва, Рублевское ш., д. 135 </p></bio><bio xml:lang="en"><p>Shengelia Lasha D., Cand. of Sci. (Med), Cardiovascular Surgeon, Research Fellow </p><p>135, Rublevskoe shosse, Moscow, 121552</p></bio><email xlink:type="simple">l.d.shengelia@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Караев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Karaev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Караев Асланбек Викторович, кандидат медицинских наук, научный сотрудник отделения рентгенхирургических методов исследования и лечения сердца и сосудов</p><p>121552, Москва, Рублевское ш., д. 135 </p></bio><bio xml:lang="en"><p>Karaev Aslanbek V., Cand. of Sci. (Med), Research Fellow of the Department of X-ray Surgical Methods of Heart and Vessels of Examination and Treatment</p><p>135, Rublevskoe shosse, Moscow, 121552</p></bio><email xlink:type="simple">avkaraev@bakulev.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гурдзибеев</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Gurdzhibeev</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гурдзибеев Алан Борисович, аспирант по специальности «Сердечно-сосудистая хирургия»</p><p>121552, Москва, Рублевское ш., д. 135 </p></bio><bio xml:lang="en"><p>Gurdzhibeev Alan B., Postgraduate Student on the specialty «Cardiovascular surgery» </p><p>135, Rublevskoe shosse, Moscow, 121552</p></bio><email xlink:type="simple">avkaraev@bakulev.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4436-0222</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коншина</surname><given-names>М. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Konshina</surname><given-names>M. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Коншина Мария Олеговна, аспирант по специальности «Кардиология» </p><p>121552, Москва, Рублевское ш., д. 135 </p></bio><bio xml:lang="en"><p>Konshina Mariia O., Postgraduate Student on the specialty «Cardiology»</p><p>135, Rublevskoe shosse, Moscow, 121552</p></bio><email xlink:type="simple">drmariakonshina@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9279-0596</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фатулаев</surname><given-names>З. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Fatulaev</surname><given-names>Z. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Фатулаев Замик Фахрудинович, кандидат медицинских наук, сердечно-сосудистый хирург, ведущий научный сотрудник</p><p>121552, Москва, Рублевское ш., д. 135 </p></bio><bio xml:lang="en"><p>Fatulaev Zamik F., Cand. of Sci. (Med), Cardiovascular Surgeon, Leading Research Fellow</p><p>135, Rublevskoe shosse, Moscow, 121552</p></bio><email xlink:type="simple">zffatulaev@bakulev.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0942-2931</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Донаканян</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Donakanyan</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Донаканян Сергей Агванович, доктор медицинских наук, руководитель отделения хирургического отделения интерактивной патологии</p><p>121552, Москва, Рублевское ш., д. 135 </p></bio><bio xml:lang="en"><p>Donakanyan Sergei A., Dr. of Sci. (Med), Head of the Surgical Department of Interactive Pathology</p><p>135, Rublevskoe shosse, Moscow, 121552</p></bio><email xlink:type="simple">sadonakanyan@bakulev.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3370-0295</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петросян</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrosyan</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петросян Карен Валерьевич, доктор медицинских наук, заведующий отделением рентгенохирургических методов исследования и лечения сердца и сосудов</p><p>121552, Москва, Рублевское ш., д. 135 </p></bio><bio xml:lang="en"><p>Petrosyan Karen V., Dr. of Sci. (Med), Head of the Department of X-ray Surgical Methods of Heart and Vessels of Examination and Treatment</p><p>135, Rublevskoe shosse, Moscow, 121552 </p></bio><email xlink:type="simple">kvpetrosyan@bakulev.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный медицинский исследовательский центр сердечно-сосудистой хирургии им. А. Н. Бакулева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>A. N. Bakulev National Medical Research Center for Cardiovascular Surgery</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>09</day><month>08</month><year>2025</year></pub-date><volume>184</volume><issue>3</issue><fpage>25</fpage><lpage>32</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шенгелия Л.Д., Караев А.В., Гурдзибеев А.Б., Коншина М.О., Фатулаев З.Ф., Донаканян С.А., Петросян К.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Шенгелия Л.Д., Караев А.В., Гурдзибеев А.Б., Коншина М.О., Фатулаев З.Ф., Донаканян С.А., Петросян К.В.</copyright-holder><copyright-holder xml:lang="en">Shengelia L.D., Karaev A.V., Gurdzhibeev A.B., Konshina M.O., Fatulaev Z.F., Donakanyan S.A., Petrosyan K.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.vestnik-grekova.ru/jour/article/view/2595">https://www.vestnik-grekova.ru/jour/article/view/2595</self-uri><abstract><sec><title>Цель</title><p>Цель. Оценить влияние конкурентного кровотока на развитие дисфункции маммарокоронарного шунта к передней межжелудочковой ветви левой коронарной артерии (МКШ-ПМЖВ), а также роль моментального резерва кровотока (МРК) в развитии дисфункции.</p></sec><sec><title>Методы и материалы</title><p>Методы и материалы. В исследование включено 57 пациентов, которые госпитализированы в период с января 2020 г. по декабрь 2022 г. Всем пациентам выполнена послеоперационная коронарошунтография, по результатам которой выявлена как дисфункция МКШ–ПМЖВ, так и функционирующая ПМЖВ. Затем проводилось измерение МРК ПМЖВ. Относительно полученных значений МРК пациенты разделены на две группы: I группа с отрицательным значением МРК – 40 (70,2 %) исследуемых, II группа – с положительным МРК – 17 (29,8 %) пациентов. Основной конечной точкой исследования являлось развитие дисфункций маммарного кондуита ввиду наличия конкурентного кровотока.</p></sec><sec><title>Результаты</title><p>Результаты. Среди 57 пациентов у 46 (80,7 %) наблюдалась полная окклюзия кондуита с отсутствием антеградного кровотока, а «феномен струны» внутренней грудной артерии (ВГА) был выявлен у 11 (19,3 %) пациентов. Относительно значений моментального резерва кровотока дисфункция шунта значительно чаще имела место в сосудах с отрицательным МРК, чем в сосудах с положительным значением, 40 (70,2 %) против 17 (29,8 %) соответственно (p&lt;0,001).</p></sec><sec><title>Выводы</title><p>Выводы. Согласно результатам исследования дисфункция маммарного кондуита в большинстве случаев обусловлена наличием конкурентного кровотока. Применение МРК перед операцией коронарного шунтирования представляется важным с целью оценки конкурентного кровотока и профилактики дисфункции кондуитов в отдаленном периоде.</p></sec></abstract><trans-abstract xml:lang="en"><p>The objective was to estimate the impact of competitive blood flow on the development of dysfunction of the mammarocoronary artery bypass graft to the anterior interventricular branch of the left coronary artery (MCABG-AIVB), as well as the role of the instantaneous wave-free ratio (iFR) in the development of dysfunction.</p><sec><title>Methods and materials</title><p>Methods and materials. The research included 57 patients who were hospitalized between January 2020 and December 2022. Postoperative coronary artery bypass graft was performed for all patients which revealed dysfunction of MCABG-AIVB and a functioning AIVB. Then the iFR of AIVB was measured. Regarding the obtained iFR values, the patients were divided in two groups: group I with a negative iFR value included 40 (70.2 %) patients, and group II with a positive iFR value included 17 (29.8 %) patients. The main endpoint of the study was the development of dysfunctions of mammary conduit due to the presence of competitive blood flow.</p></sec><sec><title>Results</title><p>Results. Among 57 patients, 46 (80.7 %) had complete occlusion of a conduit with the absence of antegrade blood flow; the «string phenomenon» of the internal thoracic artery (ITA) was detected in 11 (19.3 %) patients. Whilst the values of instantaneous wave-free ratio, graft dysfunction occurred significantly more often in vessels with negative iFR than in vessels with the positive value, 40 (70.2 %) versus 17 (29.8 %), respectively (p&lt;0.001).</p></sec><sec><title>Conclusions</title><p>Conclusions. According to the results of the research, the dysfunction of the mammary conduit in most cases was due to the presence of competitive blood flow. The use of iFR before coronary artery bypass graft is necessary in order to assess competitive blood flow and prevent dysfunction of conduits in the long-term period.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>конкурентный кровоток</kwd><kwd>коронарное шунтирование</kwd><kwd>дисфункция шунта</kwd><kwd>моментальный резерв кровотока</kwd><kwd>реваскуляризация миокарда</kwd></kwd-group><kwd-group xml:lang="en"><kwd>competitive blood flow</kwd><kwd>coronary artery bypass graft</kwd><kwd>shunt dysfunction</kwd><kwd>instantaneous wave-free ratio</kwd><kwd>myocardial revascularization</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Жалилов А. К. 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